The most popular pharmaceutical glass bottle in Ch

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There is a gap between China's pharmaceutical glass bottles and the international neutral glass standards

at the 10th annual conference held in Frankfurt, Germany, the experts of pharmaceutical glass bottles put forward the technical indicators of the main chemical composition, chemical stability and physical properties of 3.3-borosilicate glass and neutral glass. Among them, 3.3-borosilicate glass and China need support and guarantee from the new material industry. The chemical composition and physical and chemical properties of China's super hard materials and GG17 materials are basically the same. The main difference is that the control range of linear thermal expansion coefficient is different. China has strengthened the sharing of information between domestic and foreign industries. The control range of linear thermal expansion coefficient has not been strictly stipulated for these two kinds of glass. However, the performance difference between the international neutral medicinal glass bottle and China's neutral glass is quite obvious. In the future, we should actively develop the international neutral glass production and gradually restrict the use of our original concept of neutral glass, which is becoming the consensus of the industry

in China, low borosilicate glass is a so-called neutral glass which has been used for many years. Compared with the international neutral glass, the chemical composition of the two glasses is very different. China can adapt to the requirements of the export market as soon as possible. The boron content of neutral glass is low, so the linear thermal expansion coefficient is large, and the particle water resistance cannot maintain HGB1 level. This is because China's neutral glass material is relatively general, so it is reflected that the water resistance of the inner surface is also poor. The water resistance of the inner surface of international neutral glass can meet the requirements of ISO4802-HC1, while it is difficult for China's neutral glass to meet the requirements. In the international standard ISO "classification and test methods of normally mass-produced glass by composition", packaging glass has been clearly divided into three types: International neutral glass, borosilicate glass and sodium calcium glass

in the unparalleled quality experience of this international standard, sodium calcium glass is not marked for medicinal use, and the international neutral glass is recognized as the preferred glass for medicinal glass bottles in the world. In the domestic pharmaceutical industry, it is also called class a ampoule glass bottle, 5.0 glass or class a material, where 5.0 means that its expansion coefficient is not greater than 5.0 Because the water resistance, acid resistance and alkali resistance of this glass are all first-class, it can be said that it has excellent chemical stability and thermal stability. As a medicinal glass bottle, it has incomparable advantages in ensuring the quality of drugs

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